Validating xml using java

The Java language doesn't tell you what it means or convert the data to a Java type such as can call at any time to find out the type of the current element or one of its attributes.It can also tell you whether an attribute is an ID, and whether the attribute was explicitly specified in the document or defaulted in from the schema. book: #Anon Type_book title: #Anon Type_title subtitle: #Anon Type_subtitle info: #Anon Type_info copyright: #Anon Type_copyright year: #Anon Type_year holder: #Anon Type_holder author: #Anon Type_author personname: #Anon Type_personname firstname: #Anon Type_firstname othername: #Anon Type_othername surname: #Anon Type_surname personblurb: #Anon Type_personblurb para: #Anon Type_para link: #Anon Type_link As you can see, the Doc Book schema assigns most elements anonymous complex types.However, it's usually done before any further processing of the input takes place.(This description is painted with broad strokes -- there are exceptions.)Until recently, the exact Application Programming Interface (API) by which programs requested validation varied with the schema language and parser.

If you need to do that, first augment into the matching result -- SAX for SAX and DOM for DOM -- and then use Tr AX's identity transform to change the model. Putting all the information the document requires in the instance is far more reliable than splitting it between the instance and the schema. The W3C XML Schema Language is heavily based on the notion of .

This is useful for adding constraints that are more easily checked in a Turing-complete language like Java than in a declarative language like the W3C XML Schema language.

You can define a mini-schema language, write a quick implementation, and plug it into the validation layer.

When you pass a URI identifying a particular schema language to that know how to process your schema language.

Then, install your JAR in one of these four locations.

You can install an error handler such as that in Listing 3. For example, they can provide default attribute values.